Reinforcement-support for concrete structures.



G. BRADY. REINFORCEMENT SUPPORT FOR CONCRETESTRUCTURES.

APPLICATION FILED NOV. 23, 1914- Patented Feb. 12, 1918.

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. GEORGE BRADY, OF JACKSON, MICHIGAN, ASSIGNOR T0 HENRY H. LAMBERT, 0E

' CHICAGO, ILLINOIS.

REINFORCEMENT-SUPPORT FOB CONCRETE STRUCTURES.

Specification of Letters Patent.

Patented Feb. f2, 1911.8.

Application filed November 23, 1914. Serial No. 873,464.

To all whom it may concern:

Be it known that I, GEORGE Bnaov, a c1t1- zen of the United States, and a resident of Jackson, in the county of Jackson and State of Michigan, have invented a new and Improved Reinforcement-Support for Concrete Structures, of which the following is a specification.

This invention relates to means for supporting reinforcing bars at a predetermined improved supports forming .the subjectmatter of the present invention. Fig. 2 is. a view of a blank from which the supports are formed. Fig. 3 is a perspective of one of these supports.

Similar reference characters refer to like parts throughout the several views.

The bars that reinforce concrete slabs, roadways and other structures are most eflicient when positioned at the proper distance from the lower sides of the-slabs and from the surfaces of partitions. Small pieces of bricks, terra cotta tiles and wood and lumps of hard concrete are often employed to support the reinforcing rods and bars above the falsework on which floor, sidewalk or other slabs are to be molded, while smallstakes driven into the road-bed are also used to support the reinforcing bars which are to be molded in the concrete slabs which are to constitute highway pavements. While these devices often cause undesirable cavitiesin .the slabs, and are therefore objectionable-,perliap's a greater objection is that. they are seldom of uniform height, so that it is impossible .toiiobtainithe ilirei test efiiciency of the reinforcing bares aBythe use of saddles of even height, the tensile strength of the reinforcing bars, when properly placed, can be taken advantage of to the fullest extent.

The supporting devices shown in the drawings consist of small saddles bent up from properly sheared strips or blanksof sheet metal, each consisting of the body 1 from which are sheared the tongues 52 and 3, and which blanks are provided with holes T if desired. The intermediate portions of the blanks are bent to form concave seats 5 in which the reinforcing bars 6 may lie. The tongues 2 and 3 may be bent down to firmly grip the bars 6 and the crossrods 7, if cross-bars are usedin addition to the reinforcing rods 6. The uprightportions or legs 8 and 9 of the saddles may be of any desired height so as to hold the bars 6 the proper distance above the lower face of the finished slab. A foot 10 at the lower end of the leg 9 serves to prevent the saddle from falling over sidewise and also prevents the saddle'from sinking'too far when used to support reinforcing bars above sandy road-beds. I

When it is desired to employ these saddles for supporting reinforcing rods, they will be placed in parallel rows proper distances apart, after which the reinforcing bars 6 will be laid upon them. will then bend-the tongues 2 and 3 down over the bars 6, or if transverse rods 7 are .used, will bend these tongues aroundboth the bars 6 and- 7, thus firmly securing the bars and rods together, and at the same time insuring the bars and rods being held. the

proper distance abovethe falsework or other,

surfacev uponawhich these saddles rest.

In case that it is desired to armor wooden partitions, these saddlescan be secured to thepartitionsby means of nails or tacks driventhrough the holes 4, after which the bars and rods, can be secured in position in the same manner as before I described. If the bar 6 and rod 7 are to-be employed to reinforce a self-supportingpartition, the saddles can be secured to the mold for one side of the partition, after which the bars and rods may be secured in position, whereupon the mold for. the opposite sidecan be erected immediately, or in sections as the work of filling in the concrete progresses. After the concrete has set, the molds can be removed, the nails or tacks originally supporting the saddles and the reinforcing rods pulling out of the mold as it is being removed. The projecting nails or tacks can then be cut otf and the Whole surface plastered in the usual manner.

Because of the small amount of metal required to form these saddles, their cost will be very small, and a great saving of time and money will be effected by their use. p The curvature-of that port-ion of the blank that forms the part 5 of the saddle and also of those portions which jointhe part 5 and the legs 8 and 9 may be changed to suit the various reinforcements to be supported. The proportions of the different parts of the saddles and the weight of the material forming the same will depend upon the load to be carried and the distance the bars and rods are to be supported above the surfaces supporting these saddles.

I claim:

1. A supporting device for reinforcements for concrete structures comprising a strip of sheet metal having slits adjacent to and parallel to opposite side edges at opposite ends so as to form tongues along said opposite side edges, said strip being bent so as to constitute a pair of legs connected by a transverse portion which form a seat for the reinforcements, said tongues being bent upwardly at the .lines of juncture between the legs and transverse portion.

2. A supporting device for reinforcements for concrete structures comprising a strip of sheet metal having slits adjacent to and parallel to opposite side edges at opposite ends so as toform ton ues along said opposite side edges, said strlp being bent so as to constitute a pair of legs connected by a transverse portion which forms a seat for the reinforcements, said tongues being bent upwardly at the lines of juncture between the legs and transverse. portion, the .end of one of the legs being bent laterally to form a foot.

3. A supporting device for reinforcements for concrete structures comprising a strip of sheet metal having slits adjacent to and parallel to opposite side-edgesat opposite-- ends so as to form tongues" along said opposite side edges, said strip being bent so as to constitute a pair of legsconnected by a transverse portion which forms a seat for the reinforcements, said tongues being bent upwardly at the lines of juncture between the legs and transverse portion, the end of one of the legs bein bent laterally to form a foot, said foot hav ng perforations so that it may be secured in place by means of nails. i

4. A supporting device for reinforcements for concrete structurcs'comprising a strip of sheet metal having tongues adjacent to 0pposite side edges at opposite ends, said strip con ected by. a transverse portion which for s a seat for the reinforcements, said tongues being bent upwardly-at the-lines of juncture between the legs and transverse portion.

5. A supporting device for reinforcements for concrete structures comprising a strip of sheet metal having tongues adjacent to opposite side edges at opposite ends, portions of said strip being bent so as to constitute a pair of legs connected by a transverse portion which forms a seat for the reinforcements, said tongues being bent upwardly at the lines of juncture between the legs and transverse portion and being of a substantial length whereby said tongues may be bent to hold a single rod or two superposed rods arranged on said seat at an angle to each other.

6. A supporting clipfor the purpose described comprising an integral strip slotted and bent to form a seat portion with depending legs at the ends thereof adapted to maintain the seat at an elevation above a suitable support, and flexible fingers formed from the metal at opposite sides'of the strip beif bent so as to constitute a pair of legs,

' contiguous to the seat and leg portions, said fingers being spaced to accommodate'a bar laid on the longitudinal axis of the seat,s'aid fingers also being spaced apart from the transverse axis of the seat to accommodate a bar laid on said axis, and adapted to being bent about a bar extending transversely of the seat to retain the clip imposition relative thereto.

7. A supporting clip for the purpose described comprising a strip of metal slotted and bent to form a seat portion with supporting legs at its ends and flexible fingers v at opposite sides of the seat portion, said fingers being disposed to acconnnodate a bar ext'ending transverselyxof these-at and being also spaced apart transversely of the seat to accommodate a bar laid longitudinally of the seat,'said fingers also being adapted to be bent to engage a bar at points spaced apart transversely of the seat whereby le -0+ tain the clip in dcfinitepos'iti'on relative thereto,

In testimony whereof I sign this specification inthe presence of two subscribing witnesses.

Witnesses:

' Huoo W. Knm vnm vo, EDWARD N. PAGELSEN. 

